[build] Move libgcov support to toplevel libgcc

[Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE>]

And another easy one: moving libgcov over to libgcc.

Bootstrapped without regressions on i386-pc-solaris2.11 and
x86_64-unknown-linux-gnu.

Ok for mainline?

After this one, and once the problems with the unwinder move are sorted
out, I've got a few more:

* gthr is just in the planning stage

* fp-bit is almost ready

* soft-fp just started to investigate

* libgcc_tm_file only an idea

	Rainer


2011-07-02  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>

	gcc:
	* Makefile.in (LIBGCOV): Remove.
	(libgcc.mvars): Remove LIBGCOV.
	* libgov.c: Move to ../libgcc.

	libgcc:
	* Makfile.in (LIBGCOV): New variable.
	($(libgcov-objects)): Use $(srcdir) to refer to libgcov.c.
	* libgcov.c: New file.

diff --git a/gcc/Makefile.in b/gcc/Makefile.in
--- a/gcc/Makefile.in
+++ b/gcc/Makefile.in
@@ -1524,14 +1524,6 @@ MOSTLYCLEANFILES = insn-flags.h insn-con
 # Defined in libgcc2.c, included only in the static library.
 LIB2FUNCS_ST = _eprintf __gcc_bcmp
 
-# Defined in libgcov.c, included only in gcov library
-LIBGCOV = _gcov _gcov_merge_add _gcov_merge_single _gcov_merge_delta \
-    _gcov_fork _gcov_execl _gcov_execlp _gcov_execle \
-    _gcov_execv _gcov_execvp _gcov_execve \
-    _gcov_interval_profiler _gcov_pow2_profiler _gcov_one_value_profiler \
-    _gcov_indirect_call_profiler _gcov_average_profiler _gcov_ior_profiler \
-    _gcov_merge_ior
-
 # These might cause a divide overflow trap and so are compiled with
 # unwinder info.
 LIB2_DIVMOD_FUNCS = _divdi3 _moddi3 _udivdi3 _umoddi3 _udiv_w_sdiv _udivmoddi4
@@ -1877,7 +1869,6 @@ libgcc.mvars: config.status Makefile $(L
 	echo LIB1ASMSRC = '$(LIB1ASMSRC)' >> tmp-libgcc.mvars
 	echo LIB2FUNCS_ST = '$(LIB2FUNCS_ST)' >> tmp-libgcc.mvars
 	echo LIB2FUNCS_EXCLUDE = '$(LIB2FUNCS_EXCLUDE)' >> tmp-libgcc.mvars
-	echo LIBGCOV = '$(LIBGCOV)' >> tmp-libgcc.mvars
 	echo LIB2ADD = '$(call srcdirify,$(LIB2ADD))' >> tmp-libgcc.mvars
 	echo LIB2ADD_ST = '$(call srcdirify,$(LIB2ADD_ST))' >> tmp-libgcc.mvars
 	echo LIB2_SIDITI_CONV_FUNCS = '$(LIB2_SIDITI_CONV_FUNCS)' >> tmp-libgcc.mvars
diff --git a/libgcc/Makefile.in b/libgcc/Makefile.in
--- a/libgcc/Makefile.in
+++ b/libgcc/Makefile.in
@@ -793,9 +793,19 @@ iter-items := $(LIBUNWIND)
 include $(iterator)
 
 # Build libgcov components.
+
+# Defined in libgcov.c, included only in gcov library
+LIBGCOV = _gcov _gcov_merge_add _gcov_merge_single _gcov_merge_delta \
+    _gcov_fork _gcov_execl _gcov_execlp _gcov_execle \
+    _gcov_execv _gcov_execvp _gcov_execve \
+    _gcov_interval_profiler _gcov_pow2_profiler _gcov_one_value_profiler \
+    _gcov_indirect_call_profiler _gcov_average_profiler _gcov_ior_profiler \
+    _gcov_merge_ior
+
 libgcov-objects = $(patsubst %,%$(objext),$(LIBGCOV))
-$(libgcov-objects): %$(objext): $(gcc_srcdir)/libgcov.c
-	$(gcc_compile) -DL$* -c $(gcc_srcdir)/libgcov.c
+
+$(libgcov-objects): %$(objext): $(srcdir)/libgcov.c
+	$(gcc_compile) -DL$* -c $(srcdir)/libgcov.c
 
 
 # Static libraries.
diff --git a/gcc/libgcov.c b/libgcc/libgcov.c
rename from gcc/libgcov.c
rename to libgcc/libgcov.c

-- 
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Rainer Orth, Center for Biotechnology, Bielefeld University